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Your Tap Water Doesn't Need a $40 Filter — It Needs This $0 Charcoal

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254 views37likes17:10FrankRedhawkYTOriginal Release: 2026-07-15

Charcoal works as a water filter through adsorption, where its vast internal surface area (hundreds of square meters per gram) traps chlorine, organic compounds, and other contaminants that make tap water taste unpleasant; a simple homemade method using hardwood charcoal from a wood fire, rinsed, boiled, and placed in a jar with tap water overnight produces cleaner-tasting water at zero cost, while commercial filter cartridges are essentially charcoal in plastic shells that cost $60-100 annually per household.